Malware Analysis Report

2025-08-05 14:33

Sample ID 221126-28p7yaff71
Target 0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88
SHA256 0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88
Tags
nanocore evasion keylogger persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88

Threat Level: Known bad

The file 0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88 was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

Modifies WinLogon for persistence

NanoCore

Drops file in Drivers directory

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-11-26 23:15

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-26 23:15

Reported

2022-11-27 16:59

Platform

win7-20220812-en

Max time kernel

152s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\NlwMFXEVNkpPcY8n\\CUsl3ekpMaOc.exe\",explorer.exe" C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

NanoCore

keylogger trojan stealer spyware nanocore

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 1364 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp

Files

memory/1364-54-0x0000000076071000-0x0000000076073000-memory.dmp

memory/1364-55-0x0000000074790000-0x0000000074D3B000-memory.dmp

memory/1364-56-0x0000000074790000-0x0000000074D3B000-memory.dmp

memory/1292-57-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-58-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-60-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-61-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-62-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-63-0x000000000041E792-mapping.dmp

memory/1292-65-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-67-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1292-69-0x0000000074790000-0x0000000074D3B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-26 23:15

Reported

2022-11-27 17:00

Platform

win10v2004-20221111-en

Max time kernel

170s

Max time network

192s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\NlwMFXEVNkpPcY8n\\xOWwQuOtHOZL.exe\",explorer.exe" C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

NanoCore

keylogger trojan stealer spyware nanocore

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4308 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe
PID 4308 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe

"C:\Users\Admin\AppData\Local\Temp\0f3cf0fa1f66dbf9dfdb4df263777cd970ffb085e94ac0a3285bd40c2b445a88.exe"

Network

Country Destination Domain Proto
N/A 8.247.211.126:80 tcp
N/A 20.189.173.12:443 tcp
N/A 8.238.21.126:80 tcp
N/A 93.184.220.29:80 tcp
N/A 8.238.21.126:80 tcp
N/A 8.238.21.126:80 tcp
N/A 8.238.21.126:80 tcp
N/A 104.80.225.205:443 tcp
N/A 8.238.21.126:80 tcp
N/A 52.242.97.97:443 tcp
N/A 8.8.8.8:53 96.108.152.52.in-addr.arpa udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.8.8:53 appleassist.mooo.com udp
N/A 8.8.4.4:53 appleassist.mooo.com udp

Files

memory/4308-132-0x0000000074FF0000-0x00000000755A1000-memory.dmp

memory/4308-133-0x0000000074FF0000-0x00000000755A1000-memory.dmp

memory/3868-134-0x0000000000000000-mapping.dmp

memory/332-135-0x0000000000000000-mapping.dmp

memory/2216-136-0x0000000000000000-mapping.dmp

memory/2216-137-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2216-138-0x0000000074FF0000-0x00000000755A1000-memory.dmp

memory/2216-139-0x0000000074FF0000-0x00000000755A1000-memory.dmp